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Finding the Fourth Proportional to 1,748.15, 2,619.78 and 968.51

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Solution

The fourth proportional to 1,748.15, 2,619.78 and 968.51 is: 1,451.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,748.15 : 2,619.78 = 968.51 : x
  2. Step 2: Convert to fraction form
    1,748.15/2,619.78 = 968.51/x
  3. Step 3: Cross multiply
    1,748.15x = 2,619.78 × 968.51
  4. Step 4: Simplify right side
    1,748.15x = 2,537,283.13
  5. Step 5: Solve for x
    x = 2,537,283.13/1,748.15
  6. Step 6: Final answer
    x = 1,451.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.